Lexmark C770, C772 manual Cartridges

Troubleshooting

Symptom	Cause	Solution
Print too light	• Paper settings may be	• Make sure the printer paper type, paper texture,
	incorrect.		and paper weight settings match the type of
	• The Toner Darkness setting is		paper you are using.
	too light.	• Select a different Toner Darkness setting from the
	• You are using paper that does		printer driver before sending the job to print.
	not meet the printer	• Perform a Color Adjust in the Utilities Menu.
	specifications.	• Load paper from a new package.
	• The print cartridges are low on	• Avoid textured paper with rough finishes.
	toner.	• Make sure the paper you load in the trays is not
	• The print cartridges are		damp.
	defective or have been installed	• Shake the specified toner cartridge to utilize the
	in more than one printer.		remaining toner. For more information, see Print
			cartridges.
		• Replace the print cartridges.
Print too dark	• The Toner Darkness setting is	• Select a different Toner Darkness setting from the
	too dark.		printer driver before sending the job to print.
	• The print cartridges are	• Replace the print cartridges.
	defective.
Transparency print	• You are using transparencies	• Use only transparencies recommended by the
quality is poor	that do not meet the printer		printer’s manufacturer.
(Print has inappropriate	specifications.	• Make sure the Paper Type setting is set to
	• The Paper Type setting for the		Transparency.
light or dark spots, toner
	tray you are using is set to
is smeared, horizontal or
	something other than
vertical light bands
	transparency.
appear, or color does not
project.)
Toner specks	• The print cartridges are	• Replace the print cartridges.
	defective.	• Replace the transfer roller.
	• The transfer roller is worn or	• Replace the image transfer unit.
	defective.	•	Replace the fuser.
	• The image transfer unit is worn	•	Call for service.
	or defective.

•The fuser is worn or defective.

•Toner is in the paper path.

Toner rubs off the paper	• The Type setting is wrong for	• Change Paper Type to match the paper or
easily when you handle	the type of paper or specialty	specialty media you are using.
the sheets.	media you are using.	• Change Paper Texture from Normal to Smooth or
	• The Texture setting is wrong for	Rough.
	the type of paper or specialty	• Change Paper Weight from Plain to CardStock (or
	media you are using.	other appropriate weight).
	• The Weight setting is wrong for	• Replace the fuser.
	the type of paper or specialty
	media you are using.

• The fuser is worn or defective.

Gray background	• The Toner Darkness setting is	• Select a different Toner Darkness setting from the
	too dark.	printer driver before sending the job to print.

• The print cartridges are	• Replace the print cartridges.
defective.
ABCDE
ABCDE
ABCDE

Solving print quality problems

96